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Assessing U.S. Senators' Response to a Competitive Primary Challenge with Increased Partisan Roll Call Voting

Much of the political punditry in the United States discusses the notion that facing a primary election results in legislators voting in a more partisan fashion in the legislature. A common refrain of this analysis is that facing the primary election constituency (Fenno 1978) or even the threat of facing the primary election constituency causes the senator to vote with the ideological extremes of the party in following sessions of congress. The literature on congressional elections has examined this area of research as it applies to the U.S. House, but few studies fully examine the impact of primary elections on roll call voting in the Senate. This study examines Senate primary elections to see how facing a primary, specifically a competitive primary, influences how a senator votes in the legislature in the first term following the election. This study specifically asks if senators who face a competitive primary challenge and win reelection vote with their party more often in subsequent congresses than senators who do not face a competitive primary challenge. Using OLS regressions and a number of control variables shown in the literature to impact roll call voting patterns, I examine the percentage of the vote that a senator received in her primary election compared to her party unity score in the Senate after the election. While my models demonstrate that facing a competitive primary correlates with a senator having a higher party unity score than senators who do not face a competitive primary, in all of my models the coefficient on this variable is not statistically significant. However, serving in the majority party and being elected in certain election years did have a statistically significant impact on a senator's partisan voting behavior. When testing an interaction effect between facing a competitive primary and serving in the majority party after the election, I also did not find a significant relationship between the interaction and a senator's change in party unity score. These findings add to our understanding of congressional elections by exploring an under-studied aspect of elections in the United States, and future research that adapts and refines the methodology of this study could further develop these results. / Master of Arts / There is a common perception that facing a primary election makes it more likely that a member of congress votes with her party more often. The idea is that the primary voters want their representatives to be more radical, and therefore push incumbents to the extremes, resulting in more polarization in the legislature. While studies on elections to the House have shown mixed results when examining this question, few studies examine if these patterns exist in elections to the Senate. This study examines Senate primary elections to see how facing a primary influences how a senator votes in the legislature. However, because of limited data, this study examines competitive primaries, based on how much of the vote the senator receives in her election, rather than ideological primaries, based on the senator being challenged from the extremes of the party. This study specifically asks how facing a competitive primary influences a senator's partisan voting patterns in subsequent congresses after their election. In order to study this, I examine the percentage of the vote that a senator received in her primary election compared to her partisan voting patterns in the Senate after the election. I did not find that senators who face a competitive primary respond by voting in a more partisan fashion in the congressional sessions following the election. However, serving in the majority party and being elected in certain election years did have a significant impact on a senator's partisan voting behavior. When testing if the impact of facing a competitive primary was conditioned by serving in the majority party, I also did not find that serving in the majority party conditions the impact of facing a competitive primary on a senator's partisan voting patterns. While these findings did not support the notion that facing a competitive primary influences a senator's partisan voting behavior, future research could alter this study to further examine this question. Such additional research is necessary in order to more fully understand Senate elections.

Identiferoai:union.ndltd.org:VTETD/oai:vtechworks.lib.vt.edu:10919/103704
Date08 June 2021
CreatorsTarkenton, William Payne
ContributorsPolitical Science, Jewitt, Caitlin E., Goedert, Nicholas, Kitchens, Karin E.
PublisherVirginia Tech
Source SetsVirginia Tech Theses and Dissertation
Detected LanguageEnglish
TypeThesis
FormatETD, application/pdf
RightsIn Copyright, http://rightsstatements.org/vocab/InC/1.0/

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